Topolograph
See your OSPF and IS-IS network the way the protocol does.
Analyze paths, reports, topology risks, and live IGP changes.
Run what-if scenarios for failures, backup paths, and IGP cost changes.
Topolograph visualizes OSPF, OSPFv3, and IS-IS topology data, calculates shortest paths and backup paths, monitors live routing changes, and helps network engineers inspect topology risks before changing production networks.
Try demo graph Get topology inSelf-hosted. No router credentials required for analysis.
From LSDB text file to shortest paths
Upload router LSDB output, build the topology graph, then inspect shortest paths directly on the rendered network snapshot.
Try the upload LSDB
Why teams use Topolograph
Turn routing state into evidence for operations, planning, and security decisions.
Decision makers
Find causes of network degradation faster and plan network growth from factual topology data.
CTO
See IGP, BGP, and flow context, topology history, and routing events inside the customer environment.
NOC
Pair alerts with topology, connectivity, and routing changes across time.
Security
Use network-change data as a source for external connectivity, BGP anomalies, and routing activity.
1. Get topology in
Bring in LSDB data from your network or stream it live.
Upload router LSDB text output, import topology data through the API or Python SDK, or stream OSPF and IS-IS link-state changes with GRE Watcher and BGP-LS Watcher.
2. Analyze safely on a snapshot
Work on a consistent view of your network. Simulate, compare, and plan with confidence before touching production.
Build SPF paths, inspect ECMP, simulate link or node failures, test what-if IGP cost changes, and generate reports for asymmetric paths, single points of failure, non-backed-up networks, and unexpected backup paths.
3. Monitor live IGP changes
Watch your network in real time and get notified of what matters.
OSPF Watcher and IS-IS Watcher track adjacency changes, IGP metric changes, prefix reachability, and TE attributes, then export events to ELK/OpenSearch, Zabbix, Webhooks, Slack, or your automation stack.
4. Automate and ask questions
Integrate Topolograph into your tools and workflows.
Use the REST API, Python SDK, MCP Server, and Topolograph AI assistant to query graphs, compare snapshots, retrieve reports, and ask natural-language questions about network topology changes.
100% local
self-hosted
Run Topolograph anywhere in your environment using Docker. Your data never leaves your network.
Commands & supported TLVs
Vendor commands for collecting OSPF, OSPFv3, and IS-IS topology data.
| Vendor | Router LSA / topology | Network LSA | External LSA | TE / attributes | API |
|---|---|---|---|---|---|
| Cisco IOS | show ip ospf database router |
show ip ospf database network |
show ip ospf database external |
- | Yes |
| Cisco NX-OS | show ip ospf database router detail |
show ip ospf database network detail |
show ip ospf database external detail |
- | Yes |
| Fortinet | get router info ospf database router lsa |
get router info ospf database network lsa |
get router info ospf database external lsa |
- | Yes |
| Juniper | show ospf database router extensive | no-more |
show ospf database network extensive | no-more |
show ospf database external extensive | no-more |
- | Yes |
| Nokia | show router ospf database type router detail |
show router ospf database type network detail |
show router ospf database type external detail |
- | Yes |
| FRR / Quagga | show ip ospf database router |
show ip ospf database network |
show ip ospf database external |
show ip ospf database opaque-area |
Yes |
| Ruckus | show ip ospf database link-state router |
show ip ospf database link-state network |
show ip ospf database external-link-state |
- | Yes |
| Bird | show ospf state all |
show ospf state all |
show ospf state all |
- | Yes |
| MikroTik | /routing ospf lsa print detail file=lsa.txt |
/routing ospf lsa print detail file=lsa.txt |
/routing ospf lsa print detail file=lsa.txt |
- | Yes |
| Huawei | display ospf lsdb router |
display ospf lsdb network |
display ospf lsdb ase |
- | Yes |
| Palo Alto | show routing protocol ospf dumplsdb |
show routing protocol ospf dumplsdb |
show routing protocol ospf dumplsdb |
- | Yes |
| HP | show ip ospf link-state detailStub subnets without mask |
show ip ospf link-state detail |
show ip ospf external-link-stateLSA5 subnets without mask |
- | Limited |
| Ubiquiti | show ip ospf database router |
show ip ospf database network |
show ip ospf database external |
- | Yes |
| Allied Telesis | show ip ospf database router |
show ip ospf database network |
show ip ospf database external |
- | Yes |
| Extreme | show ospf lsdb detail lstype router |
show ospf lsdb detail lstype network |
show ospf lsdb detail lstype as-external |
- | Yes |
| Ericsson | show ospf database router detail |
show ospf database network detail |
show ospf database external detail |
- | Yes |
| Vendor | Command | Protocol scope | API |
|---|---|---|---|
| Arista | show ipv6 ospf database detail |
OSPFv3 LSDB topology | Yes |
| Vendor | IS-IS LSDB command | Notes | API |
|---|---|---|---|
| Cisco | show isis database detail |
LSP topology and reachability | Yes |
| Juniper | show isis database extensive |
LSP topology and reachability | Yes |
| Nokia | show router isis database detail |
LSP topology and reachability | Yes |
| Huawei | display isis lsdb verbose |
LSP topology and reachability | Yes |
| FRR | show isis database detail |
Use no hostname dynamic for stable LSP IDs |
Yes |
| TLV name | TLV | Cisco | Juniper | Nokia | FRR | Huawei | ZTE |
|---|---|---|---|---|---|---|---|
| IS Reachability | 2 | Yes | Yes | Yes | Yes | - | Yes |
| Extended IS Reachability | 22 | Yes | Yes | Yes | Yes | Yes | Yes |
| IPv4 Internal Reachability | 128 | Yes | Yes | Yes | Yes | Yes | - |
| Extended IPv4 Reachability | 135 | Yes | Yes | Yes | Yes | Yes | Yes |
| IPv6 Reachability | 236 | Yes | Yes | Yes | Yes | Yes | Yes |